BMW 51177358702 Rear Right Tank Fuel Door Gas Cap Lid

( Manufacturer Part Number: 51177358702 ), ( Type: Cap )

Review BMW Rear Right Gas Tank Fuel Cap Door Lid Oem 7358702 fits G12 740I 750I 2016–2019

The **BMW 51177358702** is a high-quality, precision-engineered replacement rear right fuel cap door lid for the **2016 2019 G12 generation 7 Series (740i and 750i models)**, designed to restore both the aesthetic and functional integrity of your vehicle. Crafted from durable, high-grade materials, this aftermarket part is meticulously manufactured to meet or exceed OEM specifications, ensuring a seamless fit and a polished finish that blends effortlessly with the original design. The fuel cap door lid features a sleek, aerodynamic contour that not only enhances the vehicle s sporty silhouette but also provides a secure, weather-resistant seal to prevent fuel vapors from escaping while maintaining optimal fuel system performance. Engineered with BMW s signature attention to detail, this component includes precise alignment guides and mounting hardware, allowing for a straightforward installation process that minimizes the risk of misalignment or improper sealing. Whether you re restoring a classic 7 Series or upgrading a well-maintained model, this replacement part guarantees a professional-grade finish, ensuring that your vehicle retains its luxury and performance credentials. Built to withstand the demands of daily driving, including exposure to varying weather conditions and road debris, the **51177358702** is a reliable choice for owners seeking both form and function in their aftermarket upgrades.

### **Pros and Cons of Buying a BMW G12 7 Series (2016 2019) 740i/750i with a Rear Right Fuel Cap Door Lid Issue (VIN: 51177358702)**

#### **Pros**

1. **Premium Luxury and Comfort**

The BMW G12 7 Series is one of the most luxurious and well-equipped executive sedans on the market. It features high-quality materials, ergonomic seating, and advanced sound insulation, making long drives comfortable and refined.

2. **Strong Performance (750i Model)**

The 750i comes with a twin-turbocharged 4.4L V8 engine producing **473 hp (740i) or 517 hp (750i)**, paired with an 8-speed ZF automatic transmission. This provides impressive acceleration and a smooth, sporty driving experience, especially with the available **xDrive all-wheel drive**.

3. **Advanced Technology and Infotainment**

The iDrive system (8th or 9th generation, depending on model year) offers a large touchscreen, Apple CarPlay/Android Auto, wireless charging, and premium audio systems (Bose or Harman Kardon). The **head-up display, adaptive cruise control, and parking sensors** enhance safety and convenience.

4. **Reliability of BMW s Twin-Turbo V8**

While BMW s N63 engine has had some early reliability concerns (oil consumption, turbo failures), the **2016 2019 G12 models saw significant improvements** with updated turbochargers and oil management systems. Many owners report few issues if maintenance is consistent.

5. **Resale Value and Prestige**

The 7 Series retains its value well due to its brand prestige and luxury appeal. Even used models command high prices, making it a solid long-term investment.

6. **Safety Features**

Standard equipment includes **iDrive-based driver assistance (e.g., lane-keeping, blind-spot monitoring, adaptive cruise), and high structural integrity** from BMW s safety engineering.

7. **Customization and Upgrade Potential**

The 7 Series offers extensive aftermarket support for performance upgrades (exhaust, suspension, tuning) and luxury enhancements (leather, wood, or carbon fiber trim).

---

#### **Cons**

1. **Fuel Cap Door Lid Issue (Specific to This VIN)**

- The **rear right fuel cap door lid** being problematic suggests a potential **manufacturing defect or wear-and-tear issue**.

- Common problems include **loose hinges, misalignment, difficulty opening/closing, or electrical sensor failures** (if the cap has a fuel level sensor).

- If this is a **structural or electrical issue**, it may require **repairs or replacement**, adding to maintenance costs.

- Some owners report that **BMW dealers charge high labor rates** for such repairs, sometimes **$300 $600 ** depending on the extent of the problem.

2. **Higher Maintenance and Repair Costs**

- BMWs are **expensive to maintain**, with **premium parts, specialized labor, and frequent service intervals** (e.g., valve adjustment every **120,000 miles**).

- The **N63 V8** has had **oil consumption issues** in some early models, requiring **frequent top-ups** (though this was mostly fixed by 2017).

- **Transmission and electrical system failures** (e.g., iDrive glitches, sensor malfunctions) can be costly to repair.

3. **Fuel Efficiency Concerns**

- The **750i gets around 14 16 MPG combined**, which is **poor for a luxury sedan** of its size.

- The **740i is slightly better ( 16 18 MPG)**, but neither is efficient compared to diesel or hybrid alternatives.

4. **Depreciation and Market Saturation**

- While the 7 Series holds value well, **luxury car depreciation is still significant** over time.

- The **G12 model was replaced by the G20 (2020 )**, meaning **parts and service may become harder to find** as older models phase out.

5. **Potential Electrical and Software Issues**

- The **iDrive system** can be **glitchy or unresponsive**, requiring **dealer visits for resets**.

- **Sensor failures (e.g., parking sensors, rain sensors, blind-spot cameras)** are common and can be expensive to repair.

6. **Size and Practicality Trade-offs**

- The **7 Series is large and heavy**, making **parking and maneuvering in cities difficult**.

- **Fuel tank capacity is only 20 gallons**, requiring **more frequent refueling** compared to larger vehicles.

7. **Competition from Other Luxury Brands**

- Alternatives like the **Mercedes S-Class, Audi A8, or Lexus LS** offer **similar luxury with sometimes better reliability or fuel efficiency**.

- **Hybrid options (e.g., BMW 740e)** provide **better MPG without sacrificing power**.

---

### **Conclusion**

You prioritize **luxury, performance, and driving dynamics** over fuel efficiency.

You are **prepared for higher maintenance costs** and have a budget for potential repairs.

The **fuel cap issue is minor** (e.g., cosmetic or easily fixable) and not a **structural or electrical failure**.

You plan to **keep the car for a moderate term (5 7 years)** before considering a newer model.

You **cannot afford unexpected repairs** (especially for the fuel cap or electrical issues).

You **prefer better fuel economy** or **hybrid options**.

The **fuel cap problem is severe** (e.g., requires dealer intervention at high cost).

You **dislike high maintenance costs**, then this may not be the best purchase.

---

### **Recommendation**

1. **Get a Professional Inspection**

- Before buying, have a **trusted BMW mechanic** inspect the **fuel cap mechanism, electrical connections, and overall engine/transmission health**.

- Check for **oil leaks, turbo condition, and transmission fluid quality**.

2. **Negotiate the Price**

- If the fuel cap issue is **documented or confirmed**, use it as **leverage to lower the purchase price** (expect **$2,000 $5,000 off** depending on severity).

- Request a **warranty or service agreement** for the fuel cap repair.

3. **Budget for Maintenance**

- Allocate **extra funds for BMW-specific services** (e.g., **$1,500 $3,000/year** for routine and unexpected repairs).

- Consider **extended warranty coverage** if available.

4. **Alternative Considerations**

- If the **fuel cap issue is a dealbreaker**, look for a **G12 model with no known mechanical problems** or consider a **2020 G20 7 Series** (though it has different engine options).

- If **fuel efficiency is a priority**, explore a **740e hybrid or a Mercedes S560e**.

5. **Final Verdict**

- **Worth it if:** You love BMWs, can handle maintenance costs, and the fuel cap issue is **not a major concern**.

- **Not worth it if:** You want a **lower-maintenance, more fuel-efficient luxury car** or cannot afford potential repairs.

- **Buy from a reputable dealer with a warranty** or a **private seller with full disclosure**.

- **Test drive thoroughly** and confirm the fuel cap works as expected.

- **Have a contingency plan** for repairs if issues arise.

Would you like guidance on specific maintenance tips or alternative luxury sedan recommendations?

Details:

LOT #177 - 2016 BMW G12 750XI N63 4.4L AWD 8-SPEED AUTOMATIC TRANSMISSION 113K MILES BLACK SAPPHIRE METALLIC PAINT COLOR. 2016 2017 2018 2019 BMW G12 740I 750I REAR RIGHT GAS TANK FUEL CAP DOOR LID OEM 7358702.

part #: 51177358702 prices

• $45.85-$90.00

specifications fueltanksysteme:

• for models: G12, 740i, 750i
• for makes: Bmw
• for years: 2016-2019
• mpn: 51177358702
• type: Cap

payments fueltanksysteme:

• other
• credit card: Diners-club
• wallet: Google-pay

returns fueltanksysteme:

• policy: No Returns

offer fueltanksysteme:

• sold: 0
• best offers: True
• started: February 2, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home

general fueltanksysteme:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

shipping fueltanksysteme:

• transit: 3-8 Days
• cost: $0.00
• type: Fixed
• service: Standard
• class: Standard

seller fueltanksysteme:

• # reviews: 2477
• rating: 99.3%
• city: Rancho Cordova, California

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